CSS Syntax

The selector points to the HTML elements you want to make style.
The declarations block contains one or more declaration separated by semicolons.
Each declaration includes a CSS property name and a value, separated by a colon.
Multiple CSS declarations are separated with semicolons, and declaration blocks are surrounded by curly braces.

p {
  color: red;
  text-align: center;
}

p is a selector in CSS (it points to the HTML element you want to style: <p>).
color is a property, and red is the property value
text-align is a property, and center is the property value